Note 15. Income Taxes (Detail) - Components of the Provision for Income Taxes (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Nov. 30, 2011	Nov. 30, 2010
Current:
U.S. federal	$ 17,586	$ 14,210
U.S. state and local	1,470	2,039
Non-U.S.	2,272	2,426
Total current taxes	21,328	18,675
Deferred:
U.S. federal	280	(555)
U.S. state and local	27	(16)
Non-U.S.	(149)	(151)
Total deferred taxes	158	(722)
Total tax provision	$ 21,486	$ 17,953